Speaker
Description
Non-thermal electron distributions can be generated by various means in magnetically confined plasmas. On TCV, non-thermal electron populations are routinely generated using electron cyclotron current drive (ECCD), in the presence of magnetohydrodynamic (MHD) instabilities and during disruptions. The kinetic energy of the non-thermal electrons can range from several tens to a few hundred kilo electron volts. Diagnosis of the non-thermal electrons can be partially achieved using electrn cyclotron emission (ECE) radiometers, measuring emission in the frequency range 70GHz to 140GHz. On TCV, a suite of ECE radiometers exists and there are several lines of sight available to make measurements. We will describe the available instrumentation, lines of sight, calibration and examine the potential analysis techniques open to us.
